Study on Effect of Contact Splash on DC Breaking

doi:10.16628/j.cnki.2095-8188.2023.01.003

Abstract

Abstract:

In order to study the effect of contact splash on DC breaking,the model of arc-contact mutual coupling was established by adding equilibrium equations.The morphology change of the contact surface after splashing was simulated by using the dynamic grid technology and arc pulling simulation was performed.The results show that the increase of the contact surface temperature promotes the thermoelectric emission on the cathode surface and increases the current density.The distortion of the electric field strength between the contacts after splashing is not conducive to the breaking of the arc,but the existence of a certain concentration of metal vapor is conducive to the extinguishing of the arc.

Key words: arc, contact splash, DC breaking, metal vapor

CLC Number:

TM503.5

XU Junshuai, LI Jing, LIU Shuxin, PENG Shidong. Study on Effect of Contact Splash on DC Breaking[J]. LOW VOLTAGE APPARATUS, 2023, 0(1): 16-23.

Figures/Tables 15

References 17

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